Ventilating apparatus.



No. 850,784. PATENTED APR. 16, 1907. H. S. RICHMOND.

VEIITILAIING APPARATUS. APPfLIoATIoN Huw BERT. 13.1906.

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@A1urmnnelmmufmHammam! WITNESSES: INVENTOR Haraldzcmam? ATTORNEY HAROLD s. RICHMOND, or BROOKLYN, NEW YORK.

VENTILATING APPARATUS.

Specification of Letters Patent.

Patented April 16, 1907.

mutation met sapesse: 1a. isos. serai No. 334,490.

yTo au whom t may concern:

Beit known that l, HAROLD S. RICHMOND, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, 'have invented new and useful Improvements in Ventilating Apparatus, of which the following isa specification.

This invention relates to means by which fresh 'air can be su plied or ventilation eifected without great oss of heat or alteration of temperature in the rooms or space to which the apparatus is a plied. By utilizing vthe heat of the foul air caving a room to temper vthe incoming air uniformity of temperature is secured. Such device can be applied in the ventilation of a room or the like or in case of a boiler space or room for tempering the incoming air or maintaining uniformity of temperature.

This invention is set forth in the following specification and claims and illustrated in the annexed drawings, in which- Figure 1 is a longitudinal vertical section of an apparatus embodying this invention.

horizontal longitudinal section Fig. 3 is a 'vertical Fig. 1. Fig. 4 is a perspectiveview of a series of plates.

y Referring to the drawings, a, b, c, and d represent four air-tight chambers completely separated from each other, except as follows:

Fig. 2 is a along line Fig. 1.

, IChamber d communicates with chamber b by means of every alternate passage formed between thin metal plates d', separated by means of thin strips and very close together.

Likewise, chamber a communicates with chamber c through the remaining passages,

but chamber c is entirely separate from d. Likewise, chamber a is se arate from chamber b. Each passage from to b contains at the bottom a stri of wickinge, of some absorbent material, leading'out through a hole or slot j' in the bottom of the box and communicating with a receptacle outside'. The remaining passages may or may not contain wicking.

AAir is drawn from chambers b and c by means of two exhaust-fans in openings g and h or by other mechanical means.

` he operation of Air is drawn by fan h from the interior ofthe room through an opening ginto chamber-d, thence through every alternate passage' between plates into c amber b and out to the open air. At the same time a practically the device is as follows: i

equal quantity 'of fresh air from the external atmosphere is drawn by fan g through an opening h. into chamber a, thence through the remaining passages between plates into chamber c and tothe interior of theroom. The air entering chamber a is cold, and the air entering chamber d is warm. After the apparatus is in operation the incoming air is heated by means of conduction through and radiation and convection from the surface of the plates at the expense of the outgoing air.

By reason of the incoming and outgoing currents of air moving in opposite directions the following condition pertains, namely: The end of each set of assages nearest chamber d is com arative y warm, and the end nearest cham er a is oomparativelycold, the temperature of each set being nearly uniformlygraduated between the ends; but in order that heat may be radiatedfrom one set to another the air traveling outward is slightly warmer than the air traveling inward at points directly opposite on the plate, and the differenceI in temperature between the air directly opposite in the two sets of passages is nearly constant for all points in the' passages. Ihis difference of'temperature depends, first, upon the differencev in temperature ternal atmosphere; second, upon the area and radiating quality of the plates; third,

the quantity of air delivered in each direc` reduced to a very small tion, and may be quantity by increasing the area and number of plates, so that the outgoing air is discharged at but a little above the temperature between the external and irl-'- of the outside atmosphere, and the incoming air enters the room but a little below the temperature of the internal atmosphere. As the outgoin 'air cools it deposits moisture u on the su ace of the plate, which is absorlhed and conducted' away by the wicking .e; otherwise it would be held in capillary suspension between the plates. Other wicks may be placed in the passages from a to c and kept moist from a rece tacle for the' purpose of supplying moisture 'y evaporation to the incoming air. The fresh and foul air are delivered in approximately equal quantities in order that as little air as possible shall escape from or enter the room by any otherroute.

' The partition between the spaces aand b is shown at 'i and that between b and c at j. The artition 7c is placed between the spaces c an d. The strips'n partly close the spaces IOC IIO

forl the air going in one direction, and the strips o are applied to the space for the counter-current.

The fans or ventilators g h are shown c onnected by belt p, and a suitable source of power (not shown) can drive belt g.

I claim- 1. A ventilator comprising two extreme i and two intermediate chambers, each extreme chamber havin an inlet and each intermediate chamber Iiaving an outlet and each extreme chamber being respectively made to communicate with the non-adjacent or farther intermediate chamber by suitablypartitioned alternating passages.

2. A ventilator comprising inlet-chambers and intermediate outlet-chambers and partitions under the outlet-chambers alternately of outgoing air for warming the incoming or resh air, said ventilator comprising air inlet and4 outlet, and passages for the incoming and outgoing air respectively, said passages being separated by 'thin or heat-conducting partitions, and plriovided with moisture-absorbent or Wicke material.

4. A Ventilating apparatus adapted to utilize the heat of outgoing air for warmin the incomin or fresh air, said, ventilator com rising an` inlet and outlet, and passa es for the incoming and outgoing airrespective y, said passages being separated by thin or heat-conducting partitions, a partitioned inlet-space and receiving-box at opposite portions ofthe inlet-passages, and a partitioned entrance-space and receiving-box at opposite portions of the outletassages.

In testimony whereof I ave hereunto set my hand in the presence of two subscribing Witnesses.

HAROLD s. RICHMOND.

Witnesses a EDUARD WIEsNER, GEORGE HULsBERG 

